| Flood damage reduction potential of river forecast services in the Connecticut River Basin - :13470 | National Weather Service (NWS)
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Flood damage reduction potential of river forecast services in the Connecticut River Basin
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  • Description:
    Flood plain management has been a subject of special concern in the United States for the past two decades. A river forecasting system is an integral part of a total flood plain management program. It is particularly important in those activities associated with temporary evacuation and/or floodproofing. The flood warning system associated with a river forecast system can be one of the most cost-effective alternatives for flood plain management. This study examines flood damage reduction in four carefully selected communities in the Connecticut River Basin. Using data from these communities a basin-wide extrapolation could proceed to other flood-prone communities in the basin. Properties on the flood plain were classified into residential, commercial, industrial and automobile categories. Stage damage assessments were made for those categories for four situations: no warning (NW), limited warning time (LWT), maximum practical evacuation (MPE), and floodproofing of one-story houses (FP(l)). The investigation found that approximately $750,000 of reducible damages can be expected on commercial and residential elements of the flood plain. Although reducible damages associated with industrial structures were not evaluated, elsewhere in the Nation such values often are of the same order of magnitude as residential and commercial. Total basin-wide reducible damages, therefore, undoubtedly exceed $1,500,000 per year. The present annual cost to the National Weather Service of providing river forecasts throughout the basin is approximately $75,000. A total of $200,000 per year would be adequate to provide forecast services associated with reducible damages.

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